pastrynetworktest.java

pastry的java实现的2.0b版

/*************************************************************************

"FreePastry" Peer-to-Peer Application Development Substrate 

Copyright 2002, Rice University. All rights reserved.

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- Redistributions in binary form must reproduce the above copyright
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- Neither  the name  of Rice  University (RICE) nor  the names  of its
contributors may be  used to endorse or promote  products derived from
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This software is provided by RICE and the contributors on an "as is"
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********************************************************************************/
package rice.pastry.testing;

import java.io.*;
import java.net.*;
import java.util.*;

import rice.environment.Environment;
import rice.environment.logging.Logger;
import rice.pastry.*;
import rice.pastry.routing.*;
import rice.pastry.leafset.*;
import rice.pastry.dist.*;
import rice.pastry.socket.*;

/**
 * Utility class for checking the consistency of an existing pastry network.
 *
 * @version $Id: pretty.settings 2305 2005-03-11 20:22:33Z jeffh $
 * @author jeffh
 */
public class PastryNetworkTest {

  /**
   * DESCRIBE THE FIELD
   */
  protected SocketPastryNodeFactory factory;

  /**
   * DESCRIBE THE FIELD
   */
  protected InetSocketAddress bootstrap;

  /**
   * DESCRIBE THE FIELD
   */
  protected HashSet nodes;

  /**
   * DESCRIBE THE FIELD
   */
  protected HashSet dead;

  /**
   * DESCRIBE THE FIELD
   */
  protected HashSet unknown;

  /**
   * DESCRIBE THE FIELD
   */
  protected final int MAX_THREADS = 100;

  /**
   * DESCRIBE THE FIELD
   */
  protected Environment environment;

  int numThreads = 0;

  /**
   * Constructor for PastryNetworkTest.
   *
   * @param env DESCRIBE THE PARAMETER
   * @param factory DESCRIBE THE PARAMETER
   * @param bootstrap DESCRIBE THE PARAMETER
   */
  public PastryNetworkTest(Environment env, SocketPastryNodeFactory factory, InetSocketAddress bootstrap) {
    this.environment = env;
    this.factory = factory;
    this.bootstrap = bootstrap;
    this.nodes = new HashSet();
    this.dead = new HashSet();
    this.unknown = new HashSet();
  }

  /**
   * DESCRIBE THE METHOD
   *
   * @return DESCRIBE THE RETURN VALUE
   * @exception Exception DESCRIBE THE EXCEPTION
   */
  protected HashMap fetchLeafSets() throws Exception {
    final HashMap leafsets = new HashMap();
    final HashSet unseen = new HashSet();

    final PrintStream ps = new PrintStream(new FileOutputStream("response.txt"));

    unseen.add(((DistPastryNodeFactory) factory).getNodeHandle(bootstrap));

    synchronized (unseen) {
      while (true) {
        if (numThreads >= MAX_THREADS) {
          unseen.wait();
        }

        if (unseen.size() > 0) {
          numThreads++;

          final SocketNodeHandle handle = (SocketNodeHandle) unseen.iterator().next();
          unseen.remove(handle);
          nodes.add(handle);
          System.out.println("Fetching leafset of " + handle + " (thread " + numThreads + " of " + MAX_THREADS + ")");

          Thread t =
            new Thread() {
              public void run() {
                boolean gotResponse = false;
                try {
                  LeafSet ls = factory.getLeafSet(handle);
                  System.out.println("Response:" + handle + " " + ls);
                  gotResponse = true;
                  ps.println(handle.getEpochAddress().getAddress().getAddress().getHostAddress() + ":" + handle.getEpochAddress().getAddress().getPort());
                  //        SourceRoute[] routes = factory.getRoutes(handle);

                  //        for (int i=0; i<routes.length; i++)
                  //          System.out.println("ROUTE:\t" + routes[i].prepend(handle.getEpochAddress()));

                  leafsets.put(handle, ls);

                  NodeSet ns = ls.neighborSet(Integer.MAX_VALUE);

                  if (!ns.get(0).equals(handle)) {
                    dead.add(handle);
                    nodes.remove(handle);
                    leafsets.remove(handle);
                    leafsets.put(ns.get(0), ls);
                  }

                  for (int i = 1; i < ns.size(); i++) {
                    if ((!nodes.contains(ns.get(i))) && (!dead.contains(ns.get(i)))) {
                      unseen.add(ns.get(i));
                    }
                  }

                } catch (java.net.ConnectException e) {
                  dead.add(handle);
                } catch (java.net.SocketTimeoutException e) {
                  unknown.add(handle);
                } catch (IOException e) {
                  System.out.println("GOT OTHER ERROR CONNECTING TO " + handle + " - " + e);
                } finally {
                  if (!gotResponse) {
                    System.out.println("Did not hear from " + handle);
                  }
                  synchronized (unseen) {
                    numThreads--;
                    unseen.notifyAll();
                  }
                }
              }
            };

          t.start();
        } else if (numThreads > 0) {
          unseen.wait();
        } else {
          break;
        }
      }
    }

    System.out.println("Fetched all leafsets - return...  Found " + nodes.size() + " nodes.");

    return leafsets;
  }

  /**
   * A unit test for JUnit
   *
   * @exception Exception DESCRIBE THE EXCEPTION
   */
  protected void testLeafSets() throws Exception {
    HashMap leafsets = fetchLeafSets();

    Iterator sets = leafsets.values().iterator();

    while (sets.hasNext()) {
      Iterator nodes = leafsets.keySet().iterator();
      LeafSet set = (LeafSet) sets.next();

      if (set != null) {
        while (nodes.hasNext()) {
          NodeHandle node = (NodeHandle) nodes.next();

          if (dead.contains(node) && set.member(node)) {
            System.out.println("LEAFSET ERROR: Leafset for " + set.get(0) + " contains dead node " + node);
          } else if ((!dead.contains(node)) && set.isComplete() && set.test(node)) {
            System.out.println("LEAFSET ERROR: Leafset for " + set.get(0) + " is missing " + node);
          }
        }
      }
    }

    // check leafset sfor unknowns...

    System.out.println("Done testing...");
  }

  /**
   * DESCRIBE THE METHOD
   *
   * @param row DESCRIBE THE PARAMETER
   * @return DESCRIBE THE RETURN VALUE
   * @exception IOException DESCRIBE THE EXCEPTION
   */
  protected HashMap fetchRouteRow(int row) throws IOException {
    HashMap routerows = new HashMap();
    Iterator i = nodes.iterator();

    while (i.hasNext()) {
      NodeHandle handle = (NodeHandle) i.next();

      System.out.println("Fetching route row " + row + " of " + handle);

      RouteSet[] set = factory.getRouteRow(handle, row);

      if (set != null) {
        routerows.put(handle, set);
      }
    }

    System.out.println("Fetched all route rows - return...");

    return routerows;
  }

  /**
   * A unit test for JUnit
   *
   * @param row DESCRIBE THE PARAMETER
   * @exception IOException DESCRIBE THE EXCEPTION
   */
  protected void testRouteRow(int row) throws IOException {
    HashMap routerows = fetchRouteRow(row);

    Iterator i = nodes.iterator();

    while (i.hasNext()) {
      NodeHandle node = (NodeHandle) i.next();
      RoutingTable rt = new RoutingTable(node, 1, (byte) environment.getParameters().getInt("pastry_rtBaseBitLength"), environment);

      Iterator j = nodes.iterator();

      while (j.hasNext()) {
        rt.put((NodeHandle) j.next());
      }

      RouteSet[] ideal = (RouteSet[]) rt.getRow(row);
      RouteSet[] actual = (RouteSet[]) routerows.get(node);

      for (int k = 0; k < ideal.length; k++) {
        if (((actual[k] == null) || (actual[k].size() == 0)) && ((ideal[k] != null) && (ideal[k].size() > 0))) {
          System.out.println("ROUTING TABLE ERROR: " + node + " has no entry in row " + row + " column " + k + " but " + ideal[k].get(0) + " exists");
        }

        if (((actual[k] != null) && (actual[k].size() > 0)) && ((ideal[k] == null) || (ideal[k].size() == 0))) {
          System.out.println("ROUTING TABLE ERROR: " + node + " has no non-existent entry in row " + row + " column " + k + " entry " + actual[k].get(0) + " exists");
        }
      }
    }

    System.out.println("Done testing...");
  }

  /**
   * A unit test for JUnit
   *
   * @exception Exception DESCRIBE THE EXCEPTION
   */
  protected void testRoutingTables() throws Exception {
    testRouteRow(39);
    testRouteRow(38);
  }

  /**
   * DESCRIBE THE METHOD
   *
   * @exception Exception DESCRIBE THE EXCEPTION
   */
  public void start() throws Exception {
    testLeafSets();
    //testRoutingTables();
    System.exit(0);
  }

  /**
   * The main program for the PastryNetworkTest class
   *
   * @param args The command line arguments
   * @exception Exception DESCRIBE THE EXCEPTION
   */
  public static void main(String[] args) throws Exception {
//    PrintStream ps = new PrintStream(new FileOutputStream("lses.txt"));
//    System.setOut(ps);
//    System.setErr(ps);
    Environment env = new Environment();
    PastryNetworkTest test = new PastryNetworkTest(env, new SocketPastryNodeFactory(null, 1, env), new InetSocketAddress(args[0], Integer.parseInt(args[1])));
    test.start();
  }
}